Object error

katanius

I installed a pear package with the pear installer and it said it installed succesfully, i have all dependencies for the package but when i run scripts using the package's methods all i get is: "Notice: Trying to get property of non-object" and "Fatal error: Call to a member function on a non-object" messages.
What can i do to solve this problem? does this mean that the package doesnt work or isn't installed correctly?

NogDog

What PEAR package?
What version of PHP are you running?
(And does the package in question say it is compatible with your PHP version?)

I ask, because there is a difference in PHP 4 versus PHP 5 in the way classes and objects are processed, and I think this error occurs in certain situation that will work in PHP4 but not in PHP5, namely making a static call to a class method where that method uses "$this->" within that method to refer to other class members. This would happen where some line in your script references a class method as...

className::methodName(args);

...instead of instantiating an object, such as...

$myObj = new className();
$myObj->methodName(args);

katanius

I use php5 and the package is net_dns. In the documentation it states that classes and objects cannot be called statically.

this is the code i used that generates the above errors:

<?php

// include class file
include("Net/DNS.php");

// create object
$ndr = new Net_DNS_Resolver();

// query for IP address
$answer = $ndr->search("www.cnet.com", "MX");

// print output
$answer->answer[0]->display();
echo "<br>";
$answer->answer[1]->display();
?>

NogDog

See this bug report: http://pear.php.net/bugs/bug.php?id=7350, which includes a couple user-supplied work-arounds you could try, or see if the reported fix is in the latest beta version at http://pear.php.net/package/Net_DNS/download/